Fix: duplicate site issue & PHP warning of undefined url

[up1512001]

What

• Fixes PHP undefined url warning of VIP dashboard
• Fixes duplicate site selection issue

Related Issue(s):

• Part of // Todo once issue is created

Checklist

• I have read the Contribution Guidelines.
• I have read the Development Guidelines.
• My code is tested to the best of my abilities.
• My code passes all lints (ESLint etc.).
• My code has detailed inline documentation.
• I have updated the project documentation as needed.

[Copilot]

Pull request overview

This PR attempts to fix two issues: a PHP undefined url warning in the VIP dashboard and a duplicate site selection problem. The changes involve adding validation logic in PHP and normalizing URLs by removing trailing slashes in JavaScript to ensure consistent URL matching.

Key Changes:

• Added check for url existence in brand validation (Settings.php)
• Normalized URLs by removing trailing slashes to fix duplicate site detection (SharedUsers.js)
• Clear password state when opening "Add to Sites" modal (SharedUsers.js)

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
inc/Modules/Settings/Settings.php	Added validation to check if url key exists in brand array before accessing it
assets/src/components/SharedUsers.js	Normalized URLs by stripping trailing slashes to fix duplicate site matching, and added password state clearing in modal handler

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

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